please answer this question type of weatherings , define them with examples
Answers
WEATHERING - DEFINITION
Weathering is the process of breaking down of rocks but not its removal. It is described as disintegration or decomposition of a rock in size by natural agents at or near the surface of the earth.
CHIEF CHARACTERISTICS OF WEATHERING - DEFINITION
Chief characteristics of weathering are:
(1) Weathering involves disintegration or decay of solid rocks.
(2) It depends on climatic elements and on the characteristics of rocks.
(3) Weathering affects the surface of the earth.
(4) Weathering causes formation of soil.
TYPES OF WEATHERING - DEFINITION
Weathering is a static process. The disintegration of rocks may occur through physical forces, chemical forces or by roots of plants, animals, insects, etc. Weathering is of three types:
(i) Physical or Mechanical weathering
(ii) Chemical weathering
(iii) Biological weathering.
PHYSICAL OR MECHANICAL WEATHERING - DEFINITION
Physical/Mechanical weathering involves rock disintegration without any change in the chemical constituents of the rock. Main factors responsible for physical weathering are temperature changes, moisture, frost action and wind. Weathering due to changes in temperature is more rapid in hot deserts. It is because temperature changes are sharpest in a desert.
CHEMICAL WEATHERING - DEFINITION
In chemical weathering, some or all of the minerals in the rocks suffer decay or alteration by such agents as water, oxygen, carbon or various organic acids. It leads to decomposition of rocks and minerals as chemical reaction transform them into different chemical combinations.
MAIN PROCESS OF CHEMICAL WEATHERING - DEFINITION
The four main processes of chemical weathering are:
(i) Solution
(ii) Carbonation
(iii) Oxidation
(iv) Hydration.
DIFFERENCE BETWEEN MECHANICAL AND CHEMICAL WEATHERING - DEFINITION
Mechanical Weathering Chemical Weathering
Disintegration of rocks take place without any change in chemical constituents of rocks. Decomposition of rocks take place with changes in the chemical constituents of rocks.
Factors such as temperature, moisture, frost action and wind cause physical break-up of rocks. Temperature, moisture, etc., cause minerals in rocks to either dissolve in water or change their composition.
It is more rapid in desert climates. It occurs in moist and cold climates.
BIOLOGICAL WEATHERING - DEFINITION
It is also known as Organic Weathering. Its main agents are animals, insects, plants and man. In all the cases, however, both physical disintegration and/or chemical decomposition are involved. This is because all biological matter is made up of oxygen and water, the two substances that set off reaction of minerals in rocks.
WEATHERING IN DIFFERENT CLIMATE - DEFINITION
(A) In Equatorial climates, humidity and temperature are constantly high. Weathering specially chemical weathering is more active in these regions.
(B) During wet season in Tropical climates, precipitation of oxides of iron and aluminium takes place from rocks. This promotes formation of laterite soils.
(C) In Dry climates or deserts, mechanical weathering is most dominant due to high diurnal range of temperature.
(D) In Mid-latitudes or Temperate climates, solution or chemical weathering operates on a large scale in limestone areas.
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Answer:
the action of the weather conditions in altering the color, texture, composition, or form of exposed objects specifically : the physical disintegration and chemical decomposition of earth materials at or near the earth's surface.
Examples of weathering in a Sentence
Recent Examples on the WebModern art lovers will once again be able to contemplate the Robert Irwin sculpture Portal Park Piece (Slice), the thin weathering steel wall that previously ran north-south through Carpenter Plaza.— Sharon Grigsby, Dallas News, "As downtown Dallas breaks ground on its biggest park yet, here’s what you can expect," 24 Sep. 2020Decades of weathering and frost had rendered the original, dry-built retaining wall fragile and in need of persistent repairs.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'weathering.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors.
Explanation:
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